Karina rows a boat downstream for 66 miles. The return trip upstream took 16 hours longer. If the current flows at 4 mph, how fast does Karina row in still water?

7 mph

Step-by-step explanation:

Let x be the speed in still water hence

Time to move downstream will be

Time to move upstream will be

Difference will be

x=7

the correct answer is b. negative exponential growth.

step-by-step explanation:

you can tell it's an exponential function because it decreases rapidly then levels out and never touches the x-axis.

it is negative because the y-axis decreases as the x-axis increases.

therefore it is a negative exponential growth graph.

hope i !

i have no idea just need points sorry

step-by-step explanation: